JPH0333028Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a special seismic recording device, that is, when a predetermined seismic motion, for example, 0.8 gal or more, the built-in printer starts operating; The present invention relates to an earthquake recording device in which a printer is not driven and thus recording paper is not consumed, and an improved earthquake recording device having an operation display device.

(Problems to be solved by conventional techniques and ideas) The above-mentioned earthquake recording device has the advantage of not recording earthquake motions that are too weak to be recorded on recording paper, so it also serves the purpose of resource conservation. However, most of the time the vibration is such that it is not necessary to make such a record. Therefore, in such a case, even if the power switch of the seismic recording device is turned on, it is difficult to determine whether the seismic measurement system including the converter and the seismic recording device is in a standby state that enables normal measurement recording. It's not always obvious.

Naturally, the measurement record of the earthquake waveform at a certain point in time is never repeated, so when an earthquake occurs that should drive the printer, there is an abnormality in some part of the system, which means that the earthquake recording device does not work. That's a problem. However, the above-mentioned earthquake recording devices do not eliminate this risk.

(Means for Solving the Problems) The present invention has been made in view of the above-mentioned problems and to solve them.

In other words, the present invention provides an operation display in an earthquake recording device in which when seismic motion exceeds a predetermined level, the printer starts driving and records the vibration waveform, and when seismic motion is lower than that, the printer stops driving and no recording is made. An operating display device consisting of a circuit and a display device is provided on the panel surface of the earthquake recording device, and in the operating display device, seismic motions below the predetermined level are classified into multiple levels according to their intensity, and each This is an earthquake recording apparatus having an operating display device, characterized in that separate light emitting elements are associated with each other, and each of the light emitting elements is configured to emit light in response to seismic motion of each class of intensity.

(Example) An example of an earthquake recording device having an operation display device of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an earthquake measurement system including the device of the present invention, in which numeral 1 denotes a transducer installed on the ground, and structurally a piezoelectric type is used.

Reference numeral 2 denotes an earthquake recording device according to the present invention that is connected to the vibrator 1, and is composed of the following parts. 3 is a printer that records vibration waveforms on recording paper 4 when a predetermined seismic motion is exceeded, and normally records the waveform automatically when the vibration exceeds 0.8 gal. 5 is the printer 3
and a control circuit for controlling an operation display device to be described below; 6 is an operation display device connected to the control circuit 5; this device 6 is composed of an operation display circuit 7 and a display device 8;

A circuit diagram of an example of the operation display circuit 7 is shown in FIG. The display device 8 is made up of, for example, seven light emitting segments 9, in one example of which light emitting diodes (LEDs) are used.

In FIG. 2, 10 is an input terminal on the side of the resonator 1, 11 is a power supply input terminal, 12 is a ground line, and 13 is a constant current source.

Next, we will explain the operation of the display device 8 in the operation display device 6 provided on the front panel surface of the device according to the present invention.
If seismic motion of less than Gal is not recorded on the recording paper 4, for example, if there is a vibration of 0.7 Gal, the printer 3
does not operate, but all seven light emitting segments are lit. At a vibration of 0.4 gal, all the light emitting segments 9 from the left of the display device 8 in FIG. 1 light up, and the other light emitting segments do not light up. At vibrations of about 0.1 gal, only the leftmost light-emitting segment lights up.

(Effect of the invention) As described above, according to the earthquake recording device having the operation display device of the present invention, during normal times without large vibrations, it is possible to determine whether the earthquake recording device and its system are operating and installed normally. can be confirmed and understood at a glance.

Therefore, when a large earthquake that should be recorded occurs, it is possible to ensure a state in which it can be measured and recorded without fail, and it is possible to eliminate the anxiety that a measurement failure may occur.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an earthquake measurement system including the device of the present invention, and FIG. 2 is a circuit diagram showing an example of an operation display circuit included in the device of the present invention. 1: Transducer, 2: Earthquake recording device, 3: Printer, 6: Operation display device, 7: Operation display circuit, 8:
Display device, 9: light emitting segment.

Claims (1)

[Scope of utility model registration request] When seismic motion exceeds a predetermined level, the printer starts driving and records the vibration waveform; when seismic motion is lower than that, the printer stops driving and no recording is made.In an earthquake recording device, an operation display circuit and a display device are used. an operating display device is provided on the panel surface of the earthquake recording device, and in the operating display device, seismic motions below the predetermined level are classified into a plurality of classes according to their intensity, and a separate light emitting element is provided for each class. 1. An earthquake recording device having an operating display device, characterized in that each of the light emitting elements is configured to emit light in response to seismic motion of each class of intensity.